Coupling for canopy-frames.



N0. 774,393. A PATENT-5D Nov. 8, 1904.

I. E. PALMER. lGOUPLING FOR GANOPY FRAMES.

APPLICATION IILED NOV. 12, 1903.

N0 MODEL.

IIA

No. 774,393.;Y

UrTED STATES Patented November 8, 1904.-I

PATnNr @rrr-cr.

ISAC E. PALMER, OF MIDDLETOWN, CONNECTICUT.

COUFLING FOR CANOPY-FRANIES.

SPECIFICATION forming part of Letters Patent No. 774,393, dated November8, 1904.

Applicationfiled November l2, 1903. Serial No. 180,807. (No model.)

following` is a specification.

My invention relates to a coupling for canopy-frames, and moreparticularly canopyframes for use 1n supporting canopies from bedsteads,hammocks, and the like where it is.

desirable that the frame be light and strong and capable of being'easily set up and knocked down. r

A practical embodiment of my invention is represented in theaccompanying drawings, in

. 6. Fig. 9 is an edge view of the same.

Figure 1 is a plan view of the coupling in the form in which it appearsfor use at a corner and in connection with round bars. Fig. 2 is a viewof the same turned at an angle of fortylive degrees to the plan shown inFig; 1. Fig. 3 is a section in the plane of the line A A of Fig. 1. iFig. 4 is a section in the plane of the line B B of Fig. 3. Fig. 5 is aview similar to 1, showing the parts as theyl appear before beingassembled. Fig. 6 is a view of a modified fo-rm adapted for use inconnecting two bars, one round and the other angular in cross-section,placed end to end. Fig. 7 is a section through the same in the plane ofthe line C C of Fig. 6. Fig. 8 is a section through the same in theplane of the line D D of Fig. Fig. 10 is a section in the plane of theline E Eof Fig. 6; and Fig. 11 is a View similar to Fig. 6, showing theparts las they appear before being assembled.

Referring to the form shown in Figs. 1 to 5, inclusive, the couplingconsists of two sockets 1 and 2, arranged at right angles and connectedby an intermediate piece 3, in which there is preferably formed anopening 4 for conveniently attaching' the canopy thereto. Each of thesockets 1 and 2 has its walls split longitudinally and is provided withlips arranged to fold over toward each other to embrace the rod which isto be inserted therein. The folding lips of the socket 1 are denoted by5 and 6 and the folding lips of the socket 2 by 7 and 8.v Before theparts are assembled these lips'occupy the position shown in Fig. 5, sothat the rods to be connected by the coupling (denoted hereby 9 and 10)may have their ends laid into the sockets 1 and 2, respectively, and thelips 5,6, 7, and 8 then folded over to hold the ends in position.

For the purpose of locking the rods against a rotary movement in thesocket I provide one or both of the rods and their respective socketsthe one with a projection and the other with an indentation, sothat-when the lips of the sockets are closed the rods cannot be rotatedtherein.

In the event it is desirable to lock the rods against longitudinaldisplacement within the socket at the same time that I lock them againstrotary movement therein I provide lthe rod and the socket the one with arecess and the other with a projection to lit the recess in thedirection of the axis of the socket, as well as in the transversedirection of the socket. Such an arrangement is clearly shown in Fig. inwhich the .rod 9 is provided with a tapered indentation or recess 11, inwhich the tapered projection 12,` formed on the inner wall of the socket1, lits when the rod 9 is placed in the socket. The recess in therod maybe easily formed by forcing a sharp tool into the rod, while theprojection 12 in the wall of the socket may be cast thereon.

In the event the rod is to be prevented from a rotary movement in thesocket and permitted at the same time to move longitudinally to bewithdrawn from the socket, as in knocking down the frame, I provide therecess 13, as shown in connection with the rod 10, Fig. 5, extended tothe end of the rod, so that the lug or projection 14 on the inner wallof the socket 2 may travel along the recess 13 as the rod 10 is forcedhome in the socket and may also travel along the said recess as the rod10 is withdrawn from the socket. The distance of the lug or projection14from the inner end of the socket 2 is a matter of choice, and the saidprojection may be made long or short, as desired.

In the event a rectangular bar is to be coupled to a round bar either ina direct line, as shown in Figs. 6 to 11, inclusive, or at right IOOangles, as represented in Figs. 1 to 5, inclusive, I form one of thesockets-in the present instance the socket l-angular in crosssection andthe socket 16 circular in crosssection, the former to receive theangular bar 17, which may be of Wood or metal, preferably of metal, andthe latter to receive the bar 18, of metal or Wood, preferably of metal.The Wall of the socket 16 may be provided on its inner face with aprojection 19v-in this instance shown as elongated transversely in theform of a lipwwhich may be received in a notch 20, formed in the roundbar 18, or in the event the latter is made ot' Wood the lip may beforced into the wood as the lips of the socket are closed.

Couplings possessing the characteristics hereinabove described may bereadily cast of malleable metal and serve to unite the parts efficientlyand expeditiously while they at the saine time hold them firmly in placeagainst a rotary movement and against a longitudinal movement wheneverrequired.

What I claim is 1. A coupling comprising sockets for the reception ofthe adjacent ends or' canopy-supporting bars, a lsocket and the barfitted to enter therein being provided the one With a projection and theother witha recess adapted to receive the projection when the parts areassembled, one of said sockets being provided with folding lips toengage the bar.

2. A coupling for the ends of adjacent bars of a canopy-supportcomprising sockets for the reception or' the ends of said bars, the saidsockets being split and provided with folding lips, a socket and its barbeing provided thel one with a projection and the other with a recessadapted to receive the projection to lock the bar against a rockingmovement Within the socket.

3. A coupling for the reception of adjacent ends of canopy-supportingbars comprising split sockets for the reception ot' the bars, thesockets and the bars being provided the one with projections and theother vvith recesses for theA reception of the projections, one of saidrecesses being extended to permit the sliding of the bar in alongitudinal direction while preventing it from a rotary movement in thesocket.

4. A corner-coupling for canopy-supports comprising sockets arranged atan angle to each other, the inner Walls or' the sockets and the Walls ofthe bars to be received therein being provided the one with projectionsand the other with recesses for the reception of the projections and thesaid sockets having their Walls split and the parts on the opposite sideof the vvall capable of folding onto the rods or bars located thereinWhen the parts are assembled.

In testimonyT that I claim the foregoing' as myinvention I have signedmy name, in presence of two Witnesses, this 6th day of Novembei', 1903.

ISAAC E. PALMER. Wi tnesses:

CHAs. M. SAUER, PAUL S. CARRIER.

